If a body takes 6 minutes to cool from 80°C to 70°C, how long will it take to cool from 60°C to 50°C, if the surrounding temperature is 25°C?

A liquid with a certain surface area takes 5 minutes to cool from 80^@C to 70^@C . The time taken by it to cool from 80^@C to 60^@C is [The surrounding temperature being 40^@C ]

A liquid takes 5 minutes to cool from 80^@C to 50^@C . How much time will it take to cool from 60^@C to 30^@C ? The temperature of surroundings is 20^@C .

A liquid takes 5 minutes to cool from 80^@C to 50^@C . How much time will it take to cool from 60^@C to 30^@C ? The temperature of surroundings is 20^@C .

A body cools in 7 minute from 60^@C to 40^@C . What time does it take to cool from 40^@C to 28^@C if the surrounding temperature is 10^@C ? [Assume that Newton's law of cooling is valid.]

A body cools from 90^@C to 80^@C in 2 minutes. How long will it take to cool from 70^@C to 50^@C if temperature of surroundings is 16^@C ?

A body cools from 62^@ C to 50^@C in 10 minutes. How long will it take to cool to 42^@C , if room temperature is 26^@C ?

A metal sphere cools from 80^@C to 60^@C in 6 minutes. How much time will it take to cool from 60^@C to 40^@C if the room temperature is 30^@C ?